Device for breaking, contracting, and expanding rims



Jan. 9, 1923. 1,441,231

6. L. LEWIS. DEVICE FOR BREAKING. CONTRACTING, AND EXPANDING RlMs.

FILED Nov. 26. 1920.

Patented Jan. d, 1923.

barren star lAthZfi GUY t. LEWIS, or annon, onto;

DEVICE FOR BREAKING, CONTRACTING, AND EXPANDING RIMS.

Application filedll'ovenlber .26, 1920. Serial No. 426,528.

To aZZw/zom t may concern: y

Be it known that l, G Y Llmwrs, citizen o'tthe United States, residingat Akron,

in the county of Summit and State oi Ohio,

haveinvented certain new and useful improvements in Devices forBrealnng,Con-

1 tracting, and Expanding Rims, of which moval thereof and to remainupon the rim until the same is replaced.

It has for its object the. provisioirot a tool oi this character which wll be, simple and durable, inexpensive to manufacture and efficientinuse.- It has for a further object the improvement oi the details 01"?such a device, the production of a novel clamping element for the rim,capable oi? use upon a variety of rims, and the improvement of thetightening device of such a device.

Further objects and advantages of the invention will hereinafter appearin the following description and the novel features thereof will beparticularly pointed out in the appended claims.

Referring to the accompanying drawings forming a part of thisspecification, in which like numerals designate like parts throughoutthe several figures,

Figure l is a side elevation of the improved tool showing it applied tothe demountable rim tor the purpose of breaking or contracting the same,the gear holding member being shown removed for the purpose of moreclearly illustrating the gear members,

Figure 2 is a similar view showing the position of the parts after thejoint has been broken, t

Figure 3 is a detail plan of one member of my device, and

Figure d is a like view of the other memher with the gears removed.

The numeral 1 indicates the rim of .a tire commonly known as ademountable rim for automobile wheels, while the inimeral 2 indicatesthe joint of such a rim and 3 the usual fastener therefor.

two members 9 and 12, telescoping one within the other, each memberbeing provided with a clamp et, 5, i or secure attachment to the rim.Novel means are provided for securing a telescoping action between themembers 9 and 12, and this means comprises generally a pairofintermeshin "gears and a a I I handle attached to one ottsaid gearstor causing rotation thereof. These members will now. be described indetail and their conjoint operation set forth.

The body portion of the member 9 is bored. for a portion ofits length toreceive the end ofthe member 12. One end of said body is bent at anangle as shown and is'pro vided with an integral hook 13 adapted to takeover the edge of the tire rim. Said hook forms one of a pair of grippingjaws, between which the rimis clamped, the other jaw being designated bythe numeral let. This aw 1d overlies the aw 13 and is con T series.

trolledin its clamping action by means of i a threaded bolt 16 passingthrough a threaded opening 15 in the member 9 at the bend thereof. 7

At the other end ofsaid member 9 there is provided a pair of integralgear holding members 11, 11, and an integral bearing stud, upon which isrotatably mounted a gear '7. The numeral 6 represents a handle iormedintegral with the gear 7 and by means of whichsaid gear is rotated inthe operation of the device.

The member 12, like the member 9, is provided with a bend and with apair of clamping hooks correspondingin details of construction to thosejust described in con nection withthe member 9. The body POP- tifon ofsaid member 1), is provided with a screw thread upon which is adapted tobe mounted the gear-.10 provided with a corresponding interior screwthread; The 10 is held in intermeshing relation with the gear "7 bymeans of the holding members 11, 11, and by the end of the member 12portions of the members 9 and 12 produces a strongerconstruction than isusual, and

that the particular form of hook comprisingthe turned in point 13 andthe abutment 13 adapts the device for use upon a variety'oiconstructions of rims.

In the operation of the device, the parts are assembled as shown in Fig.1 oi the drawing, and the clamping hooks at the ends of the two membersare applied to the rim and the securing bolts 16 tightened so that therim is firmly gripped between the aws of the clamps. The handle (3 isthen rotated to 'ause rotation of the gears 7 and 10, which in turn willcreate a pull upon the members 9 and 12 so that they will telescope.This produces the necessary force to cause the breaking of the joint inthe rim, as shown in Figure 2. In this condition of the parts, thepneumatic tire can be readily removed from the rim. The device ispermitted to remain upon the rim until it is desired to replace thetire, when a reverse of the operations just described will cause thejoint to be readily and quickly made.

While I have shown and described my preferred form of the invention, itwill be understood that there may be other embodiments thereof, and thatminor changes in the details of construction of the parts may be madewithout departing from the spirit of the invention as defined by theappended claims.

Having described my invention, what I claim as new and desire to secureby Letters Patent is:

1. A tire tool comprising an expansible and contractile body, the endsof which are bent at an angle and provided with integral rim-engaginghooks, abutments formed on said body in position to cooperate with saidrim-engaging hooks to engage the rim, means for clamping the hook andthe abutment to the rim, and means for expanding and contracting saidbody.

2. A tire tool comprising a pair of telescoping members, one of whichcomprises a tubular body portion having an integral rim-engaging hook atone end disposed at an angle theret the other of which comprises a screwthreaded shank adapted to tit said tubular body and having an integralrim-engaging hook at its opposite end, means cooperating with the hooks0t sai members for firmly clamping them to the rim of a tire, pinionmounted upon said screwthreaded shank to rotate thereon, pinionretaining hooks upon said tubular body at the end opposite said integralrim-engaging hook, and means "for rotating said pinion to cause thetelescoping members to move to collapse or expand the tire llIIl.

In testimony whereof". I aifix my signature.

GUY L. LEWIS.

